I should mention that the initial edits were in HxD. (Base16)
In order to automate things, cmd had to be able to read it, so I had to make MS's certutil.exe encode it like a security certificate so it was Base64. After doing some conversions, I made it swap stuff before decoding back to Base16.

Problem is, Base64 has 24bit byte length instead of 8, meaning the position of the data in Base16 can turn it into THREE DIFFERENT STRINGS in Base64.

With the release of a tool that can somewhat open the rpk archives for Exanima, I was able to convert all humans into different bosses, as well as skeletons. The modding community is still stagnant, but I've done pretty much all I can with it at this point.